1. NDP-Based Measurement Protocol
Month Year
doc.: IEEE yy/xxxxr0
Mar. 2017
NDP-Based Measurement Protocol
Date:
Ganesh Venkatesan, et al, Intel Corporation
Jonathan Segev, Intel

2. Month Year
doc.: IEEE yy/xxxxr0
Mar. 2017
Outline
Drawing from submission 17/0050r2, propose a NDP-based sounding sequence for the SU measurement protocol in az
Ganesh Venkatesan, et al, Intel Corporation
Jonathan Segev, Intel

3. Motivation Reuse 11ac PHY architecture for simplicity
Month Year
doc.: IEEE yy/xxxxr0
Mar. 2017
Motivation
Reuse 11ac PHY architecture for simplicity
Support SU operation for improving efficiency
Where MU Operation is possible/preferred the protocol outlined in the submission 17/0050r2 will be used
Support MIMO and full bandwidth for enhanced accuracy
Ganesh Venkatesan, et al, Intel Corporation
Jonathan Segev, Intel

4. Background Measurement protocol includes two phases
Mar. 2017
Background
Measurement protocol includes two phases
Channel sounding phase
Measurements feedback phase
These two phases can be within the same or different TxOPs

5. Mar. 2017
Sounding Sequence
Similar to the NDP Sounding protocol described in Cl of IEEE
NDP Announce (.11az) is the VHT NDPA modified for use in .11az (modification details TBD)
NDP (.11az) is the VHT NDP modified for use in .11az (modification details TBD)
The timeline for the responder to respond with a Measurement Feedback frame is TBD
The contents of the Measurement Feedback frame is TBD
Ganesh Venkatesan, et al, Intel Corporation

6. Mar. 2017
Conclusion
NDP-based measurement sequence is proposed as a SU range measurement protocol
Measurement protocol is similar to the VHT Sounding Protocol described in IEEE Cl
MIMO and full bandwidth measurement are supported
Ganesh Venkatesan, et al, Intel Corporation

7. Mar. 2017
Motion
We agree to the following text for 11az SFD under the “Accuracy and Coverage over 2.4 and 5GHz” subsection:
The measurement phase for the ranging protocol for SU shall be based on IEEE VHT sounding protocol and have the following frame exchange sequence:
Note : the contents of NDP Announce (.11az), NDP (.11az) and Measurement Feedback; and the spacing between the NDP (.11az) and Measurement Feedback are TBD.
Ganesh Venkatesan, et al, Intel Corporation

8. Mar. 2017
Discussion
Ganesh Venkatesan, et al, Intel Corporation

9. Potential Measurement Feedback Content
Mar. 2017
Potential Measurement Feedback Content
Channel State Information (CSI)
Channel estimates for obtaining ToD/ToA and/or AoA/AoD (SU case)
Receiver of the CSI Feedback calculates ToA for both UL and DL (non-critical path calculation)
Location Measurement Response (LMR)
ToD/ToA and AoA/AoD
Sender of the feedback pays the computing power
Feedback sender can choose either CSI or LMR
Ganesh Venkatesan, et al, Intel Corporation